Monosaccharide

Q.

Select the incorrect statement

1. Fructose is reducing sugar with keto group

2. Maltose is reducing sugar

3. Sucrose is non reducuing non sugar

4. Glucose is reducing sugar

Q.

. The correct statement is

1. A is hemiacetal, B is an acetal
2. A& B have hemiacetal structure
3. A & B have acetal structure
4. A & B have acetal structure

Q.

Number of - OH groups present in the cyclic structure of 'deoxy ribose' sugar

1. 3
2. 2
3. 5
4. 4

Q. Which one given below is a non - reducing sugar?

1. Glucose
2. Sucrose
3. Lactose
4. maltose

Q.

The reagents which do not react with glucose are

I. Schiff's reagent II. Tollen's reagent III.Fehling's solution IV. NaHSO₃

1. All
2. I & IV
3. I, II, III
4. I, III, IV

Q. When the following aldohexose exists in its D-configuration, the total number of streoisomers in its pyranose form is:
$CHO-C{H}_2-CHOH-CHOH-CHOH-C{H}_{2}OH$

Q. Which statement (s) is /are correct about the products from (D) by path (a) and path (b)?

1. Path (a) proceeds via the cleavage of $C-3$ and $C-4$ bond of (D)
2. Path (a) proceeds via the cleavage of $C-4$ and $C-5$ bond of (D)
3. Path (b) proceeds via the cleavage of $C-3$ and $C-4$ bond of (D)
4. Path (b) proceeds via the cleavage of $C-4$ and $C-5$ bond of (D)

Q. Which of the following is the Fischer projection of L – threonine (also known as 2S, 3R-2-amino- 3-hydroxy butanoic acid)?

1. 
2. 
3. 
4. 

Q. Which of the following compounds will behave as a reducing sugar in an aqueous $KOH$ solution?

1. 
2. 
3. 
4. 

Q. Compound $\left(D\right)$ is :

1. 
2. 
3. 
4. Both $\left(a\right)$ and $\left(b\right)$